Results 51 to 60 of about 771,116 (333)

The development and use of thermal desorption methods for the analysis of polycyclic aromatic hydrocarbons and volatile organic compounds in ambient air [PDF]

open access: yes, 1996
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.In occupational and public health there is a need for measurement and speciation of chemicals in ambient air to achieve control of air pollution and ...
Bahrami, Abdulrahman
core   +7 more sources

Subsurface Characterization of the Merija Anticline’s Rooting Using Integrated Geophysical Techniques: Implications for Copper Exploration

open access: yesGeosciences
This study investigates the subsurface rooting of the Merija anticline in the Missour Basin, Morocco, with a focus on copper mineralization exploration. A sequential geophysical workflow was implemented, combining gravity surveys, electrical resistivity (
Mohammed Boumehdi   +8 more
doaj   +1 more source

Correlation of Gas Quality with Hydrodynamic Parameters in Transmission Networks [PDF]

open access: yesMATEC Web of Conferences, 2019
Natural gases are a mixture of hydrocarbons. Their composition determines the basic variables that need to be taken into account in the calculation of transport or gathering systems.
Eparu Cristian Nicolae   +2 more
doaj   +1 more source

Plasma-Based CH4 Conversion into Higher Hydrocarbons and H2: Modeling to Reveal the Reaction Mechanisms of Different Plasma Sources

open access: yesThe journal of physical chemistry. C, Nanomaterials and interfaces, 2020
Plasma is gaining interest for CH4 conversion into higher hydrocarbons and H2. However, the performance in terms of conversion and selectivity toward different hydrocarbons is different for different plasma types, and the underlying mechanisms are not ...
S. Heijkers, M. Aghaei, A. Bogaerts
semanticscholar   +1 more source

Identification of sources of elevated concentrations of polycyclic aromatic hydrocarbons in an industrial area in Tianjin, China [PDF]

open access: yes, 2009
The concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) were determined by gas chromatography equipped with a mass spectrometry detector in 105 topsoil samples from an industrial area around Bohai Bay, Tianjin in the North of China.
Jiao, W.T.   +14 more
core   +1 more source

Somatostatin receptor 4 (SSTR4) is a tumor suppressor in cutaneous and head & neck squamous cell carcinomas

open access: yesMolecular Oncology, EarlyView.
This study identifies somatostatin receptor 4 (Sstr4) as a critical tumor suppressor against skin and head/neck cancers (HNSCC, cSCC, and BCC). The loss of Sstr4 removes a check on cell growth, causing hyperactivation of the MAPK‐ERK signaling pathway (↑).
Ali Taqvi   +6 more
wiley   +1 more source

Engineering IL‐4 resistant proinflammatory human myeloid cells for cancer immunotherapy

open access: yesMolecular Oncology, EarlyView.
We developed a scalable workflow to generate proinflammatory human myeloid cells. CRISPR/Cas9‐edited CD34+ hematopoietic stem and progenitor cells were expanded and differentiated with M‐CSF. Deletion of STAT6 or STAT6/NFKB1 enhanced macrophage proinflammatory gene expression and cytokine secretion in the presence of IL‐4 while maintaining antibody ...
Theresa Barberi, Alan D. Friedman
wiley   +1 more source

Impact of NBTI Stress on VDMOSFET Regions

open access: yesAlgerian Journal of Signals and Systems, 2018
In this paper, we investigate the impact of negative bias temperature instability (NBTI) degradation on both channel and drain regions, of commercial power double diffused MOS transistor (VDMOSFET), using capacitance-voltage method (C-V). We report that
Sidi Mohammed Merah, Bouchra Nadji
doaj   +1 more source

Effect of Cu(NO3)2 and Cu(CH3COO)2 Activating Additives on Combustion Characteristics of Anthracite and Its Semi-Coke

open access: yesEnergies, 2020
The process of anthracite and its semi-coke combustion in the presence of 5 wt.% (in terms of dry salt) additives of copper salts Cu(NO3)2 and Cu(CH3COO)2 was studied. The activating additives were introduced by an incipient wetness procedure.
Kirill Larionov   +7 more
doaj   +1 more source

3D Geomechanical Model Construction for Wellbore Stability Analysis in Algerian Southeastern Petroleum Field

open access: yesEnergies, 2022
The main objective of this research work was the wellbore stability evaluation of oil and gas wells based on a 3D geomechanical model, which as constructed using seismic inversion in a southeastern Algerian petroleum field.
Said Eladj   +5 more
doaj   +1 more source

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